P M V Subbarao Professor Mechanical Engineering Department I I T Delhi

Slides:

Advertisements

Similar presentations

Modes of Work Transfer P M V Subbarao Professor Mechanical Engineering Department I I T Delhi Development of Power for Different Needs!!!

Advertisements

Quiz – An organic liquid enters a in. ID horizontal steel tube, 3.5 ft long, at a rate of 5000 lb/hr. You are given that the specific.

Electrical Analogy of Heat Transfer P M V Subbarao Associate Professor Mechanical Engineering Department IIT Delhi Simple ideas to Eliminate Discontinuities.

Conduction & Convection Quiz 9 – TIME IS UP!!! A flat furnace wall is constructed with a 4.5-inch layer of refractory brick (k = Btu/ft·h·

Kern’s Description of Shell Side Flow in SHELL-AND-TUBE HEAT EXCHANGER P M V Subbarao Professor Mechanical Engineering Department I I T Delhi Another.

Analysis of Simple Cases in Heat Transfer P M V Subbarao Professor Mechanical Engineering Department I I T Delhi Gaining Experience !!!

Design of Systems with INTERNAL CONVECTION P M V Subbarao Associate Professor Mechanical Engineering Department IIT Delhi An Essential Part of Exchanging.

Kern Method of SHELL-AND-TUBE HEAT EXCHANGER Analysis

Closure of Kern’s Method

One Dimensional Polar Geometries For Conduction with Heat Generation P M V Subbarao Associate Professor Mechanical Engineering Department IIT Delhi A.

An Ultimate Combination of Physical Intuition with Experiments… P M V Subbarao Professor Mechanical Engineering Department I I T Delhi Boundary Layer.

The Heat Conduction Equation P M V Subbarao Associate Professor Mechanical Engineering Department IIT Delhi An Easy Solution to Industrial Heat Transfer.

Development in Double Pipe HEAT EXCHANGER for Concurrence & Better Economy! More New Geometric Ideas : Just for Economy !!! P M V Subbarao Professor Mechanical.

Correlations for INTERNAL CONVECTION P M V Subbarao Associate Professor Mechanical Engineering Department IIT Delhi An Essential Part of Exchanging Heat……..

One Dimensional Steady Heat Conduction problems P M V Subbarao Associate Professor Mechanical Engineering Department IIT Delhi Simple ideas for complex.

Solutions of the Conduction Equation P M V Subbarao Associate Professor Mechanical Engineering Department IIT Delhi An Idea Generates More Mathematics….

Optimal Fin Shapes & Profiles P M V Subbarao Associate Professor Mechanical Engineering Department IIT Delhi Geometrical Optimization is the Basic Goal.

Heat Convection : Cylinder in Cross Flow P M V Subbarao Associate Professor Mechanical Engineering Department IIT Delhi A Common Industrial Application.

Helical Double-tube HX P M V Subbarao Professor Mechanical Engineering Department I I T Delhi Ideas for Creation of Compact HX!!!

Kern Method of SHELL-AND-TUBE HEAT EXCHANGER Analysis

Results of Kern Method Basic Kinematic Details Group No. Tube Side Velocity (m/s) Number of Tubes Shell Diameter length STHX (m) Ds/L

Chapter 4.1: Design and Rating of Double Pipe Heat Exchangers.

Deduction of Fundamental Laws for Heat Exchangers P M V Subbarao Professor Mechanical Engineering Department I I T Delhi Modification of Basic Laws for.

Enhancement of Heat Transfer P M V Subbarao Associate Professor Mechanical Engineering Department IIT Delhi Invention of Compact Heat Transfer Devices……

Week 11 Similar figures, Solutions, Solve, Square root, Sum, Term.

Classification of Heat Exchangers P M V Subbarao Professor Mechanical Engineering Department I I T Delhi Creation of Variety in Anatomy of Heat Exchanger!!!

Solving Quadratic Equations by Factoring. Solution by factoring Example 1 Find the roots of each quadratic by factoring. factoring a) x² − 3x + 2 b) x².

Design Formulae for Mingled Shell-side stream P M V Subbarao Professor Mechanical Engineering Department I I T Delhi A Confluence Model for A Circuitous.

Large Shell Heat Exchangers P M V Subbarao Professor Mechanical Engineering Department I I T Delhi An Engineering Solution to the Crisis of Massive Volume.

The Family of Shell and Tube Heat Exchangers P M V Subbarao Professor Mechanical Engineering Department I I T Delhi Family members with Simple Geometrical.

One Dimensional Flow of Blissful Fluid -III P M V Subbarao Professor Mechanical Engineering Department I I T Delhi Always Start with simplest Inventions……..

Double Pipe HEAT EXCHANGERS with Finned Inner Tube P M V Subbarao Professor Mechanical Engineering Department I I T Delhi Ideas for Creation of Compact.

One Dimensional Flow with Heat Addition

Non-dimensional Analysis of Heat Exchangers P M V Subbarao Professor Mechanical Engineering Department I I T Delhi The culmination of Innovation …..

Point Velocity Measurements: Thermal Anemometry P M V Subbarao Professor Mechanical Engineering Department True Measurement of High frequency Velocity.

Convection in Flat Plate Boundary Layers P M V Subbarao Associate Professor Mechanical Engineering Department IIT Delhi A Universal Similarity Law ……

One Dimensional Models for Conduction Heat Transfer in Manufacturing Processes P M V Subbarao Professor Mechanical Engineering Department I I T Delhi.

One Dimensional Non-Homogeneous Conduction Equation P M V Subbarao Associate Professor Mechanical Engineering Department IIT Delhi Another simple Mathematical.

Double Pipe HEAT EXCHANGERS with Low Thermal Resistance P M V Subbarao Professor Mechanical Engineering Department I I T Delhi Ideas for Creation of Isotropically.

Performance Analysis of Heat Exchangers P M V Subbarao Professor Mechanical Engineering Department I I T Delhi A First Step in Techno-Economics of HXs?!?!?!

Nature of Zero Pressure Gradient BL Flows…… P M V Subbarao Professor Mechanical Engineering Department I I T Delhi Solutions for Flat Plate Boundary Layer.

Design and Analysis of Fins with Realistic Boundary Conditions P M V Subbarao Associate Professor Mechanical Engineering Department IIT Delhi Design for.

Mechanical Engineering Department GOVERNMENT ENGINEERING COLLEGE, DAHOD. A PPT On Derivation of LMTD for Parallel flow Heat Exchanger Prepared By:

Ch 4.3: Nonhomogeneous Equations: Method of Undetermined Coefficients

UNSTEADY-STATE HEAT CONDUCTION - II

Concurrent Engineering Aspects of HXs

We will be looking for a solution to the system of linear differential equations with constant coefficients.

Extended Surface Heat Transfer

Analysis of the Simplest Flow

The Heat Equation for Two-Dimensional Objects

Enthalpy & First Law for CVs

More Non-Dimensional Models for Simple Heat Exchangers

Heat Exchanger Design Optimization

First Order Nonlinear ODEs

Double Pipe HEAT EXCHANGERS with Finned Inner Tube

P M V Subbarao Professor Mechanical Engineering Department I I T Delhi

Parametric Study of STHE Design

Simple ODEs to Study Thermofluids

Second Order Linear ODEs

20th Century Thermodynamic Modeling of Automotive Prime Mover Cycles

Modified Definitions for Library of Ideas TEMA : An authorized body for innovation & Standardization. Shell side fluid : 1 Tube side fluid.

Solution to More Thermo-Mechanical Problems using Laplace Equations

Modification of Capacity Ratio in Simple HXs

Introduction to Partial Differential Equations

Variation of Fluid Temperature in Heat Exchangers

Second Order-Partial Differential Equations

Temperature Profiles in Heat Exchangers

Performance Analysis of Heat Exchangers

SHELL-AND-TUBE HEAT EXCHANGERS

Solutions of Second Order ODEs with CC

Presentation transcript:

P M V Subbarao Professor Mechanical Engineering Department I I T Delhi Double Pass DPHX P M V Subbarao Professor Mechanical Engineering Department I I T Delhi More New Geometric Ideas : Just for Economy !!!

Two inner tubes and one outer tube

Variation of Fluid Temperatures dz

Homogenization of Inhomogeneous Equation

Still Inhomogeneous ?!?!? What happened on the right side of the line

A True Second Order Homogeneous ODE Let A homogeneous second order differential equation.

The general solution is : Where A and B are constants and l and m are roots of :

Boundary conditions: z

Boundary conditions: z

Size of A Tow Pass DPHX Total Capacity of A Heat Exchanger with of length L:

Total Capacity of A Heat Exchanger with of length L:

Differentiate  wrt z:

Z=0

Mean Driving Force for Two Pass DPHX

New Factors  Factor: Ratio of true mean temperature difference to the ITD.

More Ideas ????